body{
    opacity: 0.8;
    animation-name:my_background;
    animation-duration:12s;
    /*�任ʱ��*/
    animation-delay:2s;
    /*������ʼʱ��*/
    animation-iteration-count:infinite;
    /*��һ����ѭ������*/
    animation-play-state:running;
    /*������ʼ����*/
}

form{
    width: 400px;
    border-radius: 5px;
    transform: translateY(8rem);
}
table td{
    padding: 10px 5px;
}
.ok{
    background: url(../imgs/ok.png) no-repeat 0% 50%;
    width: 40%;
}
.err{
    background: url(../imgs/err.png) no-repeat 0% 50%;
    color: #ff4343;
    padding-left: 20px;
    font-size: 12px;
}
.isRep{
    text-align: center;
    color: red;
    display: block;
    margin-top: 1rem;
}